Rock-drill.



PATENTED APR, 2, 1907 P. E- GLAZE.

' ROCK DRILL.

APPLICATION FILED JAN.S1,19OG

VI h 588 I INQVENTOH FREDERICKE. GLAZI BYL ATTORNEYS l) .5! 22s., CO'LAFRXDO, A CORPS duplication filed ilaiuur 31.1906. Serial w is to provilhn1 (onslrurt horiug and drilling tools with moons rrudcring thorn svlf-rlcsniug---lhat adapt-- ing them lor removal of pii during oporutiou tho-root.

Specification of Letters Patent,

Patented April 2, 1907.

with ihv some located opposite or in stagger 'lhc invention consists of the novel and iuiproved (OUSUUCUOKL which will licrouintlor 1 he lully dvsrrihhd. and illustrated by tho accompuuyiu lll'2.\'1l\i'i in the drawing FrllHOH l and 3 show tinlly tho shank or howl r-nds wit mums shown applied lhorvlo. in modified loriu. Figs. 3 and -1 twist-drills with modi'livd forms of tho chuming menus. and Figs. 5, (i, 7, and S art" tronsvcrsr sectional views when; rospcrlivob through the ribbed portions of tho drills illustrated in Figs. 1,2,3. and i.

it is Well known that in drilling llzu or hurl; holcs in rock with mzu-hiuo-drills not 0111- plo iing some iuvlhnd ol' forcing o'atororsir into the holes whorrhy lo ('l(tU1 thorn of dust and vhippings grout dillivully is cxpcrivncud through the dust, Sun, pail-hing around they drill, causing it to bind in tho hoh; thereby rendering it very dillivult :uid at times almost ifnpossible to Withdraw tho drill from the hole.

Now the object of my invention is to construct drills in general, of whatsoever form thereof, liavin helical or other form of groove or rib, with obstructions in the grooves or on the ribs operating to eject the dust or chipruttings ruin the hole during drilling action and ehective for removal of all such cuttings upon removal of the drill from the hole.

1n the practice of my invention 1 may pro vide or construct drills with the aforesaid obstruction arranged projecting into the drill-grooves from the sides of the ribs and h urvrlouning E l ut ouo moans illustrate i of tho drill.

iug zirrziugvuu-m \Ylill respect to thoso rho ndjzwvul groiwrs. or the may he in the llil' luro ol' struck up or olhr-Vwiso it died wells, disposed ll'2lll -'\'ll'. l in lhr grooves, r-Ytcnrh ing i'roiu lll) lo rih or part \\1l. sci tho groove, us may he do 'rod and host sheplod for the u e iulvudcd in drilling holes in rorl; or o'lhrr lllzllillill.

in my drimir s i lui'vo ilhistrutod in in:

\ruliou applied lo s1 riuglu-rihhod and trust dos drills: hut l do not '10 to ho restricted thereto in tho uso oi my invention, sinoc its the. (lust and rlupf rimrcpiiou rouiprvlimiils similar dust and chip romoviug moans on nu}; form of drill to which th s said 11mins are appli 'z'rhlb. I Wish it further undo sloorl that the obstruction shown on one form oi drill in my drawings iuuy ho rhzuigmi to another form oi" ol s.rur {i011 illustrated or of substantially similar construction without departing from the spirit, of my invention.

in describing my invention as illuslrutod in tho drmviugs i would iirs refer to Fig. lhorro'l, showing a. conunm'i. form of drill )1, having straight lougituilinril grooves or channels l5 and similar ribs t. In the grooves or channels B, I provide raised hur obstructions D- such, for instance, as may be cut with a round or hull-nosed chisel. The bur ohslruotious are preferably made extending from rih to I'll) and. with the cut or hurl; side facing haclm'ardly from the bit to the shank The bur "obstructions i) in any groove or channel B are preferably spaced apart less than n full Working smoke of the drilliug-nmohine. In. adjacent grooves or channelsthcy ore preierahly located in staggered arran ement, substantially as shown in Fig. 1. Obviously the obstructions l) in the chermels B may be otherwise formed-as, for instance, by rolls or other wise .\'hen the drill is nmnuisctured.

In F 2 1 illustrate forms of obstructions, one, E, consisting 0t burs cut from opposite sides of therihs U, another, F. in the nature of a projection extending out into the drill-groove or channel (7, and still another, G, consisting of 21 bur or lug, leaving it space H. between its under side and the bottom of the groove or uh annel.

Fig. il'illustrzrtcs another form of ohstriwtion applied to a twist-drill, the some eonsisting of staggered arrangement of fillings l inflthe grooves or channels B, made integral with the twisted ribs v In Fig. 4 I show a twist-drill having hurs J or lugs K constructed similar to the like burs Eand lugs F. (Illust-rated in Fig. 2.) It will he noticed that in this figure of the drawings the burs or lugs are located on one side of the l'lbS, though obviously I do not desire to he so restricted in the use of my invention.

It is intended that all the hurs and, lugs hcreinhefore deserihed shall he formed providing abrupt or substantially wrpendieula r faces next toward the drill-shank and with faces looking toward the hit or cuttin end of the drill, preleruhlv sl ring to the hottom or side oi" the grooves or ehunnels.

The construction and use oi my invention will he understood from the ulun'e tltst'llption A drill constructed with grotn'es' and rihs, and u series of tIt1l1S\'(l.\(l \'-tllil nsetl ohstruetions in the grooves, the (Il). 'll'llt'll |ll. lieing formed integrally connecting l\\n ndjzu-enl rihs, suhstuntiullv 21 shown und (ltSt'l'lllttl.

FlllCDlCllltli li. (ll,.\'/LlC.

Mrs. 0. t. l.\'r'rox, ll. I). S'roennxn. 

